Simplify.
x2 + 2x - 15
x².3x

How do you create a data set with 8 points in it that has a mean of approximately 10 and a standard deviation of approximately 1?

Answer 20 points and brainiest ! on the board, your teacher writes an example of how to find the median. one of the numbers is erased, leaving what is shown, 18, 30, 26,12 22. what is the median? a. 10 b. 20 c. 24 d. 28

Answer asap! urgent! will give brainliest!